Preheat oven to 350.

Cream shortening, sugar and eggs until fluffy. Sift flour, baking soda and powder, and salt. Add dry ingredients to wet, alternating with 1 cup of buttermilk, beginning and ending with flour. Add 1/2 cup of orange juice and half of orange zest. Drop on greased cookie sheet. Bake at 350 for 8-10 minutes.

For glaze, begin with remaining orange juice and zest in mixing bowl. On low speed, add powdered sugar in 1 cup increments until it reaches desired thickness.

Glaze cookies while still warm. Let glaze dry.